T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

A253871

T(n,k)=Number of (n+2)X(k+2) 0..1 arrays with every 3X3 subblock diagonal maximum minus antidiagonal minimum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.

Terms

    a(0) =512a(1) =3328a(2) =3328a(3) =20480a(4) =31632a(5) =20480a(6) =119040a(7) =288000a(8) =296960a(9) =119040a(10) =679936a(11) =2546432a(12) =3939840a(13) =2589968a(14) =679936a(15) =3825920a(16) =22201600a(17) =52394496a(18) =50414592a(19) =22729728a(20) =3825920a(21) =21426176a(22) =192159408a(23) =677982208a(24) =1052857184a(25) =659280384

External references